Results 141 to 150 of about 1,176,606 (385)

Quantum gravity from Weyl conformal geometry

open access: yesEuropean Physical Journal C: Particles and Fields
We review recent developments in physical implications of Weyl conformal geometry. The associated Weyl quadratic gravity action is a gauge theory of the Weyl group of dilatations and Poincaré symmetry.
D. M. Ghilencea
doaj   +1 more source

Dilaton from tractor and matter field from twistor

open access: yesJournal of High Energy Physics, 2019
Conformal tractors and twistors can be obtained via gauge reduction of the conformal Cartan geometry, thanks to the dressing field method. Perhaps surprisingly, it is possible to reduce the gauge symmetry further still.
J. François
doaj   +1 more source

Dimensional oxidization on coset space

open access: yesJournal of High Energy Physics, 2020
In the matrix model approaches of string/M theories, one starts from a generic symmetry gl(∞) to reproduce the space-time manifold. In this paper, we consider the generalization in which the space-time manifold emerges from a gauge symmetry algebra which
Koichi Harada   +3 more
doaj   +1 more source

Instanton operators and symmetry enhancement in 5d supersymmetric quiver gauge theories [PDF]

open access: yes, 2015
A bstractWe consider general 5d SU(N ) quiver gauge theories whose nodes form an ADE Dynkin diagram of type G. Each node has SU(Ni) gauge group of general rank, Chern-Simons level κi and additional wi fundamentals.
Kazuya Yonekura
semanticscholar   +1 more source

Influence of a Standard Heat Treatment on the Microstructure and Properties of Inconel X‐750 Produced by Laser Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Ni‐base superalloys produced using additive manufacturing (AM) have a different response to heat treatments when compared to their conventional counterparts. Due to such unpredictability, various alloys with industrial interest are currently overlooked in most prior AM research.
Guilherme Maziero Volpato   +6 more
wiley   +1 more source

Conformal symmetry in quantum gravity

open access: yesEuropean Physical Journal C: Particles and Fields
We study the problem of how to derive conformal symmetry in the framework of quantum gravity. We start with a generic gravitational theory which is invariant under both the general coordinate transformation (GCT) and Weyl transformation (or equivalently,
Ichiro Oda
doaj   +1 more source

New observations in the BRST analysis of dynamical non-Abelian 2-form gauge theory

open access: yes, 2011
We generalize the usual gauge transformations connected with the 1-form gauge potential to the Becchi-Rouet-Stora-Tyutin (BRST) and anti-BRST symmetry transformations for the four (3+1)-dimensional (4D) topologically massive non-Abelian gauge theory that
Kumar, R., Malik, R. P.
core   +1 more source

Dark matter and dark force in the type-I inert 2HDM with local U(1)H gauge symmetry [PDF]

open access: yes, 2014
A bstractWe discuss dark matter (DM) physics in the Type-I inert two-Higgs-doublet model (2HDM) with local U(1)H Higgs gauge symmetry, which is assigned to the extra Higgs doublet in order to avoid the Higgs-mediated flavor problems. In this gauged inert
P. Ko, Y. Omura, Chaehyun Yu
semanticscholar   +1 more source

Symmetries, Symmetry Breaking, Gauge Symmetries

open access: yes, 2015
The concepts of symmetry, symmetry breaking and gauge symmetries are discussed, their operational meaning being displayed by the observables {\em and} the (physical) states. For infinitely extended systems the states fall into physically disjoint {\em phases} characterized by their behavior at infinity or boundary conditions, encoded in the ground ...
openaire   +2 more sources

First‐Principles Modeling of Solid Solution Softening and Hardening Effects in Al–Mg–Zr–Si Aluminum Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
The role of various alloying elements in face‐centered cubic aluminum on the barrier of a Shockley partial dislocation during its motion is presented. The study aims to understand how alloying atoms such as Mg, Si, and Zr affect the energy landscape for dislocation motion, thus influencing the solid solution hardening and softening in aluminum, which ...
Inna Plyushchay   +3 more
wiley   +1 more source

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